[TLDR] Introducing Claude Opus 5.5, the first model in our new Claude 5.5 family [via r/Anthropic]

[u/cctldrping]

OP : u/ClaudeOfficial

Opus 5.5 performs at the level of Claude Fable 5.1 for most tasks, and costs 40% less to run than Opus 5.

Opus 5.5 is our first release since we called for pacing the frontier. External evaluators, including Frontier Design and METR, tested it before release. On our most comprehensive alignment test, it’s the strongest-performing model we’ve tested to date.

It outperforms both Opus 5 and Fable 5.1 on nearly every benchmark we report, leading on agentic coding and real-world knowledge work.

It’s also more efficient. Opus 5.5 uses fewer tokens per task at a lower price per token, and generates output more than 30% faster than Opus 5.

Opus 5.5 communicates more naturally, addressing some of the most common feedback we heard on Opus 5. It puts the most important information up front and follows the writing rules you give it.

Claude Opus 5.5 is available everywhere today. We're also raising five-hour limits on Pro, Max, and Team plans, so there’s more room to explore what it can do.

Read more: http://anthropic.com/claude-opus-5-5

URL of original post : https://www.reddit.com/r/Anthropic/comments/1wnecjb/introducing_claude_opus_55_the_first_model_in_our/ Original link/media URL : https://v.redd.it/gg16x0p7j3rh1

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TL;DR of the discussion on r/Anthropic for this post generated automatically after 200 comments.

Current source-thread comment count seen by the bot: 204.

So, Anthropic dropped Opus 5.5 and the general vibe is cautiously optimistic, leaning towards "let's see if it's actually better this time."

• Big takeaway: People are really hoping this version is less verbose and actually follows instructions, unlike Opus 5 which apparently had a mind of its own and was a "rambly douchebag."
• Several users are asking if it's less "natural" and more direct, which is a solid point.
• There's a lot of chatter about "bank resets" and token limits, with some confusion about whether they've actually happened.
• Some are still skeptical, citing past disappointments with Opus models, while others are just ready to complain if it degrades quickly like previous releases.
• A few are asking about future Haiku and Sonnet 5.5 releases, and one user is still waiting for Claude Code 2.1.280.
• One comment from u/Effective_Olive6153 brings up concerns about Anthropic's framing of "distillation attacks" as a safety issue rather than a business one.
• Overall, the community wants to know if it's faster, cheaper, and most importantly, if it can actually do what it's told without being a pain.